Mounting for transmission gearing and guard



Oct. 14, 1952 CULLMAN 2,613,544-

MOUNTING FOR TRANSMISSION GEARING AND GUARD Filed Aug. 17, 1951 INVENTOR. OT TO C U L L M A N ATT'YS Patented Oct. 14, 1952 "MOUNTING FORITRANSMISISION' GEARING Y *"-JANDGUARD" I Otto. (lullmamchicago, .IIL, assignor to cuummi Wheel 60., Qhicago,.Ill., a. corporation of Illinois Application Au ust '17, 1951; Se'rialNu. 2 3,260'

This inventionrelates to motor-driven, mechanical devices, particularly such. as 'grinders where the speed-reduction jgearingarequiresa plurality of transfers involving a successioniof 5 .Claim's. (01. 74-219 setscrew l0. Theisleeve Blextends beyond both sides of the, pinion 8 and has loosely journaled therebnpatonegside 'of the .pinion '8, a sprocket wheel-al andlpinion 8.2 which may be connected transmission belts .or gear trains overhanging by La. commonnhub with a bearing bushing 9;! the bearings of the motor-and the driventmabetween the hub and sleeve. Similarlymounted chine to such an extent as to require additional 0n the driven shaft 6 is a sleeve 9.2 which .isinbearings at the ends of the shafts. tegralwith 'ajsprocket wheel -8;3.fastened; to shaft The main objects of this invention are to pro- B byrsetscrew .llLl. A pinion 8.4 and. sprocket vide an improved form of transmission shaft wheel 8.5,-which-are integrallyconnectedkby a and bearing construction for use in cases where common hubr'areloosely journaled on the sleeve a high speed motor is geared down for driving 9.2-*with.-anintervening.bushing 9.3. The pinion a slow speed machine, such as a grinder; to Bfandwheel 8.5are connected by-achain belt H. provide an improved transmission unit structure Thespinion alkis connected with the'wheeltl suitable for use in connection with existing by chain belt .1 l..l,.rand.isprocket pinion 8.2 is motors and machines, regardless of the length connected with rsprocket wheel 8.3 by .chain'belt that the shafts thereof extendibeyond their b'ea'r- I .2. ings; to provide simple means for bracing the The outer 'ends ofthesleeves 9 and 9.2, which driving and driven shafts to take. the strain of are at the left of Fig. 2,1are, journ'aled in bearthe gearing and for'mounting a guard for housings in aframebar l2, which may have bushings ing such transmission mechanism. l3,.as "shown in Figs. land 3.. These bushings A specific embodiment of this invention is are omitted for clearness in Fig. 2. In order to shown in the accompanying drawings in which: secure the bar l2 against accidental displace- Figure 1 is a perspective view of a motorment from the sleeves 9 and 9.2, these sleeves driven wheat grinder constructed according to have annular grooves 14 in which spring rings this invention, with some of the parts separated I5 are seated so as to bear against intervening in exploded relation to the body of the machine. washers IS. The frame bar 12 is tapped at I8 Fig. 2 is a sectional view of the transmission for setscrews 19 which pass through apertures mechanism and its guard taken in the plane of I! in the transmission guard housing 20 to conthe axes of the driving and driven shafts. nect this housing to the bar l2.

Fig. 3 is an enlarged fragmentary detail in In operation the pinion 8 drives the sprocket perspective showing one of the shaft-end bear 8.5 at reduced speed, the sprocket 8.5 drives ings in assembled relation to adjacent parts. pinion 8.4 through its direct connection there- In the form shown in the drawings, a machine with, and this pinion 8.4 drives the sprocket such as for example a grain grinder and its wheel 8.I which is integral with pinion 8.2 and motor 2 assembled as a unitary structure, may the latter drives the sprocket wheel 8.3, which is have bearings 3 and 4 for its driving shaft 5 directly connected to the shaft 6. There is thus and driven shaft 6 mounted on a common base I. a three-step speed reduction between shafts 5 As shown in the drawings, the motor shaft 5 and 6. and the grinder shaft 6 are connected by a multi- Th transmission unit as a whole may be dispi p, Speed-reducing power transmission connected from the driving and driven shafts 5 gearing u comprising a succession of and 6, by merely removing the guard housing 20 Wheels in gear train relation to each Otherand releasing the setscrews l0 and HM. This These are Preferably sprocket Wheels and chain enables the motor, the driven machine, or both, beltsto be removed for the purpose of repair without In order that thls transmlsswn mechamsm a disassembling the transmission unit inasmuch may be used i any Standard motor and any as the bar I! maintains the sprocket wheels and Stapdard machme' regardless of the length their connecting chains in their assembled relawhich the motor shaft might extend beyond its ti on, even when removed from the shafts. bearings, the sprocket wheels are mounted on A b di t th h ft 5 d 6 sleeves bored to receive the shafts 5 and 6 and my en ng s rams upon e s S an 1 adapted to serve as removable extensions of said due to the pun of the cham drlve Shown P shafts the corresponding thrust that would exist in In the ifi form Shown in Fig 2, the the case of transmission gears, would, in the sprocket pinion 8 is integral with the sleeve 9 form Shown, be absorbed y the bar 12 in uch and both are secured to the driving shaft 5 by a manner as to render unnecessary any connection between this bar and frame structure of the machine other than through the shafts.

Although but one specific embodiment of this invention is herein shown and described, it will be understood that numerous details of the construction shown may be altered or omitted without departing from the spiritof the invention as defined by the following claims.

I claim:

1. In a power transmission mechanism having a pair of parallel shafts extending beyond their bearings with sprocket and chain drive between the overhanging parts of said shafts, a. stiffbar connecting the ends of said shafts and having bearings therefor, each said shaft having an annular groove near its outer end. snap rings seated in said grooves, and washers interposed between said snap rings and said bar.

2. In a power transmission mechanism having 7 a pair of parallel shafts extending beyond their bearings with sprocket and chain drive between the overhanging parts of said shafts, a stiff bar connecting the ends of said shafts and having bearings therefor, means interposed between said shafts and bearing bar to hold said bar in place thereon, and a guard housing removably attached to said bar.

3. In a devic of the class described, a driving shaft, a driven shaft, a base, bearings for said shafts fixedly mounted on said base, said shafts extending in overhung parallel relation beyond said bearings, transmission mechanism connecting the overhanging parts of said shafts, a brace bar connecting the ends of said shafts beyond said transmission mechanism and having bearings for said shafts, means on said shafts to hold said bar in place thereon, and a guard housing attached to said bar and having walls'enclosing said transmission mechanism.

4. A transmission unit comprising a driving shaft, a sleeve fast on said driving shaft, a cogwheel fast on said sleeve, a pair of connected cogwheels loosely journaled on said sleeve, a

driven shaft, a second sleeve fast on said driven shaft, a pair of connected cogwheels loosely journaled on said second sleeve and drivingly related respectively to said first-named cogwheel and the next adjacent member of the pair of loosely journaled cogwheels on said driving shaft sleeve, a cogwheel fixed on said driven shaft sleeve and drivingly related to the other'member of said first-named pair of connected oogwheels, a frame bar connecting said sleeves, said bar having bearings in which said sleeves are journaled, and means acting between said bar and sleeves to hold said bar on said sleeves.

5. Power transmission mechanism, comprising a driving shaft, a driven shaft, relatively fixed bearings in which said shafts are journaled with free end portions of said shafts projecting from said bearings, a sleeve on the end portion of said driving shaft, a second sleeve on the end portion of said driven shaft, multiple step transmission gearing drivingly connecting said sleeves, means detachably connecting each sleeve to its respective said shaft, a bar having bearings for said sleeves at the ends thereof that are remote from said shaft bearings, and means on said sleeves for holding said bar in place thereon.

O'ITO CULLMAN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 642,242 Miller Jan. 30, 1900 1,854,018 Carlberg Apr. 12, 1932 2,171,158 McCann Aug. 29, 1939 2,480,798 Alexander Nov. 11, 1947 FOREIGN PATENTS Number Country Date 707,267 France Apr. 13, 1931 

